4 buildings need to be upgraded before we can train a survivor up to 26. Mission car, craftsman, council and then training grounds. Based on previous councils I'm guessing each will cost 20m supplies a pop so if it goes live on Tuesday as planned then it looks like it'll be possible. But it will take a lot of work/gold/money.

@JediMasterYoda Not true, I will reach enough tokens to get the spear, and I haven't spend any money on this game yet...You only needed to reset the distance twice... that's 800 gold, which takes me less than a month (probably closer to 3 weeks) to harvest from normal (albeit quite regular) gameplay, without spending any money.